
Drennen Custom Contracting
Licensed Professional: Drennen Custom Contracting LLC
At a Glance
About Drennen Custom Contracting
With a 5-star Google rating from 372 reviews, Drennen Custom Contracting LLC is among the top-rated radon professionals serving Fort Collins, Colorado. Holds multiple NRPP certifications for both radon measurement and mitigation. Specializes in radon mitigation and radon testing. With over 372 Google reviews, this is one of the most-reviewed radon professionals in Colorado.
Credentials & Verification
NRPP Radon Mitigation Specialist License
Licensed to design and install radon mitigation systems
Issuing Body
National Radon Proficiency Program (NRPP)
License Type
Professional License
Status
Current through May 2027Verified against NRPP, RADON_SITE public databases · Last checked April 2026 · Report incorrect information
Contact & Location
Phone
(970) 482-9100
office@drennencc.com
Website
www.drennencc.com
Location
608 E Trilby Rd, Fort Collins, CO 80525, USA
Compare Contractors
View all in Fort Collins →Absolute Radon
Fort Collins, CO
ARUS Consulting
Fort Collins, CO
Certified Property Inspections, LLC.
Fort Collins, CO
Choice City Home Inspections, LLC
Fort Collins, CO
Not sure what you need?
Answer a few questions about your home and radon situation. We'll recommend whether you need testing, mitigation, or both.
Take the 90-Second AssessmentFree. No account required.
This listing has not been claimed by the business owner.
Are you the owner? Claim this listingCertification data sourced from NRPP/NRSB public databases. Verify current status directly with the contractor before hiring. FindRadonPros.com is a directory service and does not endorse or guarantee any contractor's work. Report incorrect information